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Nomoto, Tadashi; Matsumoto, Yuji – Information Processing & Management, 2003
Introduces a novel approach to unsupervised text summarization. Proposes an "information-centric" approach to evaluation, where the quality of summaries is judged not in terms of how well they match human-created summaries but in terms of how well they represent their source documents in information retrieval tasks such as document…
Descriptors: Cluster Analysis, Cluster Grouping, Electronic Text, Evaluation Methods

Miyamoto, Sadaaki – Journal of the American Society for Information Science, 1998
Develops a method of rough retrieval, an application of the rough set theory to information retrieval. The aim is to: (1) show that rough sets are naturally applied to information retrieval in which categorized information structure is used; and (2) show that a fuzzy retrieval scheme is induced from the rough retrieval. (AEF)
Descriptors: Classification, Cluster Analysis, Information Retrieval, Information Seeking